The people's choice, a popular vote undertaken at the television program's website, is revealed at the end of the Wednesday night episode just before 8.30pm.

With two more days of voting to go the Granex invention is the clear leader with 60.78% of voters in favour of the invention, ahead of the Ezy Lifter 'a tool for the easy removal of floor boards' (28.43%) and the Slingshot an 'all-weather lightweight electric vehicle' (10.78%).

Professor Behdad Moghtaderi spoke last week to 1233's Jill Emberson about the invention, 'a technology platform developed initially for geothermal power generation and waste heat recovery', developed at the University of Newcastle's Priority Research Centre for Energy.

But first Professor Moghtaderi started by explaining the relationship between his co-inventor Dr Elham Doroodchi, who is also a chemical engineer.